2011 MERCEDES-BENZ E-CLASS CABRIOLET sensor

Problems with PARKTRONIC
Problem Possible causes/consequences and
M Solutions
Only the red segments
in the PARKTRONIC
warning displaysa
re lit.
You also hear awarning
tone for approximately
two seconds.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds,
and the indicator lamp
in the PARKTRONIC
button lights up. PARKTRONIC has malfunctioned and has switched off.
X
If problems persist, have PARKTRONIC checked at aqualified
specialist workshop. Only the red segments
in the PARKTRONIC
warning displaysa
re lit.
PARKTRONIC is deacti-
vated after approx-
imately 20 seconds. The PARKTRONIC sensors are dirty or there is interference.
X
Cleant he PARKTRONIC sensors (Y page 290).
X Switch the ignition back on. The problem may be caused by an external source of radio or
ultrasound waves.
X
See if PARKTRONIC functions in adifferent location. Parking Guidance
Important safety notes Parking Guidance is an electronic parking aid
with ultrasound. Ultrasound is used to meas-
ure the road on both sides of the vehicle. A
suitable parking space is indicated by the
parking symbol. You receive steering instruc-
tions when parking. You may also use PARK-
TRONIC (Y page 185). G
WARNING
Parking Guidance is merely an aid and may
recommendp arking spaces that are not suit-
able for parking. For example, these might be
spaces where parking is prohibited, drive-
ways, unsuitable surfaces, etc.
Parking Guidance measures the parking
space as you drive past it. Any later changes
to the parking space are not taken into
account. For instance, this may be the case when the vehicle parked in front of or behind
the space changes its position or when an
obstacle is moved into the parking space.
Parking Guidance does not relieve you of the
responsibility for paying attention. If you rely
solely on Parking Guidance, you could cause
an accident and injure yourself and others.
You are always responsible for safety and
must continue to pay attention to your imme-
diate surroundings when parking and
manoeuvring.
G
WARNING
Objectsl ocated above the height range of
Parking Guidance will not be detected when
the parking space is measured. These are not
taken into account when the parking proce-
dure is calculated, e.g. overhanging loads, tail
sections or loading ramps of goods vehicles.
In some circumstances, Parking Guidance Driving systems
189Driving and parking
Z

Briefly showing detecte
dtraffi csigns in
the multifunction display
When yo uactivate the Speed Limi tAssist
warning function,at raffic sign indicating the
speed limit or end of speed limit zone :may
appearint he multifunction display. The traffic
sign appears for approximately five seconds
as soon as it is detected. Any other informa-
tion in the multifunction displayish idden for
this period.
X Activate the Speed Limit Assist warning
function using the on-board computer
(Y page 222).
Symbol ;appears.
Permanently showing detected traffic
signs in the multifunction display
If Speed Limit Assist is selected in the on-
board computer, atraffic sign indicating the
speed limit or end of aspeed limit zone :
appears in the multifunction displayass oon
as it is detected.
Traffic sign indicating aspeed limit :is gen-
erally displayed until:
R at raffic sign indicating the end of the speed
limit is detected.
R you make aturn.
R you leave or enter acityort own.
R the road type changes (e.g. motorway,
country road).
R you have travelled acertain minimum dis-
tanc ewithout the traffic sign being repea-
ted or detected again.
X Display Speed Limit Assist using the on-
board computer (Y page 222).Lane Tracking package
Genera lnotes The Lane Tracking package consists of Blind
Spot Assist (Y page 196)and Lane Keeping
Assist (Y page 198). Blind Spot Assist Important safet
ynotes
Blind Spot Assist uses aradar senso rsystem
to monitor th eareas on bot hside sofy our
vehicle. Blind Spot Assis tprovide sassistance
at speeds higher than 30 km/h. Awarning
display in the exterior mirrors draw syour
attention to detected vehicles in the moni-
tored area .Ifyou then switch on the corre-
sponding turn signa ltochange lane, you will
alsor eceive avisual and acoustic collision
warning. The Blind Spot Assist monitoring
system usess ensors in the rear bumper. G
WARNING
Blind Spot Assist is only an aid designed to
assist driving. It may fail to detect some vehi-
cles and is no substitute for attentive driving.
Blind Spot Assist cannot detect road and traf-
fic conditions. It may fail to detect narrow
vehicles, such as motorcycle sorbicycles, or
only detect them too late.
Monitoring may be affected by dirty sensors,
strong spray or poor visibility caused by snow,
rain or mist, for example. In this case, vehicles
are detected late or not at all.
Always pay attention to traffic conditions and
yours urroundings. Otherwise, you may fail to
recognise danger sintime, caus eanaccident
and injure yourself and others.
The radar sensor system is automatically
deactivate dnearradio telescope facilities
(Y page 345).
For Blin dSpotA ssist to assist you when driv-
ing, the radar sensor system must be activa-
ted (Y page 229) and operational.
Monitoring range of the sensors
Blind Spot Assist monitors the area up to
three metres behind your vehicle and directly
next to your vehicle, as shown in the diagram. 196
Driving systemsDriving and parking

Example: Coupé
G
WARNING
Blind Spo tAssist monitors certain areas in the
immediate vicinity of your vehicle. Vehicles
that approach and drive past at high speeds
are not detected. There is no displaya nd no
warning.
If the lanes are very wide, it may not be pos-
sible to monitor the complete width of the
neighbouring lane. For this reason, vehicles in
the next lane may not be detected, especially
if they are driving in astaggered formation in
different lanes. This may be the case if vehi-
cles are driving at the edge of their lane that
is furthest awayf rom your vehicle.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injure yourselfa nd others.
If the lanes ar enarrow ,the system may be
unable to distinguish the neighbouring lane
from the one beyond it. For this reason, vehi-
cles in the farther lane may be indicated,
especiallyift he vehicles are driving in astag-
gered formation in different lanes. In particu-
lar, this may be the case if the vehicles are
driving at the edge of their lane nearest your
vehicle. Due to the nature of the system:
R
warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R warnings may be interrupted when driving
alongside particularly long vehicles, for
example lorries, for aprolonged time.
The two sensors for Blind Spot Assist are
integrated into the sides of the rear bumper.
Make sure that the bumper is free of dirt, ice
or slush around the sensors. For example, the
radar sensors must not be covered by cycle
racks or overhanging loads. Following a
severe impact or in the event of damage to
the bumpers, have the function of the radar
sensors checked at aqualified specialist
workshop, e.g. aMercedes-Ben zService
Centre. Blind Spot Assist may otherwise not
work properly.
Indicator and warning display :
Yellow indicator lamp/red warning lamp
If Blind Spot Assist is switched on, indicator
lamp :in the exterior mirror slights up yel-
low up to aspeed of 30 km/h. At speeds
above 30 km/h, the indicator lamp goes out
and Blind Spot Assist is operational.
If av ehicle is detected within the monitoring
range of Blind Spot Assist at speeds above
30 km/h, warning lamp :on the corre-
spondin gside lights up in red. This warning is
alway semitted when avehicle enters the
blind spot monitoring range from behind or
from the side. When you overtake avehicle, Driving systems
197Driving and parking Z

the warning onl
yoccurs if the differenc ein
spee dislesst han1 2km/h.
The yellow indicator lamp goes out if reverse
gearise ngaged. Blind Spot Assist is then
deactivated.
The brightness of the indicator/warning
lamps is adjusted automaticallya ccording to
the ambient light. G
WARNING
Blind Spot Assist is not active at speeds below
30 km/h, and the indicator lamps in the exte-
rior mirrors are yellow. Vehicles in the moni-
toring range are then not indicated.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injure yourselfa nd others.
Collisio nwarning
If av ehicl eisd etected in the monitoring range
of Blind Spo tAssist and you switch on the turn
signal, adoublew arning tone sounds. Red
warning lamp :flashes. If the turn signal
remains on, detected vehicles are indicated
by the flashing of red warning lamp :.There
are no further warning tones.
Switching on Blind Spot Assist
X Make sure that the radar sensor system
(Y page 229) and Blind Spot Assist
(Y page 224) are activated in the on-board
computer.
X Turn the key to position 2in the ignition
lock.
Warning lamps :light up red in the exte-
rior mirrors for approximately 1.5 seconds
and then turn yellow.
Trailer towing
If you attach atrailer, make sure you have
correctly established the electrical connec-
tion. This can be accomplished by checking
the trailer lighting. In this event, Blind Spot
Assist is deactivated. The indicator lamp in
the exterior mirrors lights up yellow, and the
Blind Spot Assist currently unavail‐ able See Owner's Manual message
appears in the multifunction display.
i You can deactivate the indicator lamps in
the exterior mirrors.
To do so, switch off Blind Spot Assist if:
R the key is in position 2in the ignition
lock.
R the engine is not running.
R the electrical connection to the trailer
has been established.
Lane Keeping Assist Important safety notes
Lane Keeping Assist monitors the area in
front of your vehicle by means of
acamera at
the top of the windscreen. Lane Keeping
Assist detectsl ane markings on the road and
warns you before you leave your lane unin-
tentionally.
If you have chosen the (Y page 225) function
in the on-board computer and select km as
the unit of measurement, Active Lane Keep-
ing Assist is active from speeds of 60 km/h.
If the displayu nit is selected, the assistance
range begins at 40 mph. G
WARNING
Lane Keeping Assist does not keep your vehi-
cle in its lane. It is only an aid and may detect
the lane markings on the road incorrectly or
not at all.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray.
R there is glare, e.g. from oncomingt raffic,
the sun, or reflection from other vehicles.
R the windscreen is dirty, misted up or cov-
ered, for instancebyas ticker, in the vicinity
of the camera
R several or no lane markings for asingle lane
are present. 198
Driving systemsDriving and parking

R
the lane markings ar eworna way, dark or
covered up ,e.g.byd irtors now.
R the distance to the vehicl einfront is too
small and the lane marking sthu sc anno tbe
detected.
R the lane markings on the road are unclear,
e.g. near roadworks.
R the lane markings chang equickly, e.g.
lanes branc hoff, cros sone another or
merge.
R the road is narro wand winding.
Lane Keeping Assist cannot detec troad and
traffic conditions. It is not asubstitute for
attentive driving .You are responsible for the
vehicle's speed, braking in good time, and
steering correctly. Always adapt your driving
style to suit the prevailing road and weather
conditions. Always pay attention to traffic
conditions and your surroundings. Otherwise,
you may fail to recognise dangers in time,
cause an accident and injure yourself and oth-
ers.
Aw arning may be given if afront wheel
passes over alane marking. It will warn you
by means of intermittentv ibration in the
steering wheel for up to 1.5 seconds.
Activating Lane Keeping Assist
X Symbol :appears in the multifunction
display. Active Driving Assistance package
General notes The Active Drivin
gAssistance package con-
sists of DISTRONIC PLUS (Y page 171), Active
Blind Spot Assist (Y page 199) and Active
Lane Keeping Assist (Y page 202).
Active Blind Spot Assist Important safety notes
Active Blind Spot Assist uses
aradar sensor
system to monitor the side areas of your vehi- cle that are behind the driver.
Awarning dis-
play in th eexteri or mirror sdraws your atten-
tio ntod etected vehicles in the monitored
area. If you then switch on the corresponding
turn signal to change lane, you will also
receive avisual and acoustic collision warn-
ing. If arisk of lateral collision is detected,
corrective braking may help you avoid acol-
lision. To support the course-correcting brake
application, Active Blind Spot Assist also uses
the forward-facin gradar sensor system.
Active Blind Spot Assist provides assistance
at speeds higher than about 30 km/h. G
WARNING
Active Blind Spot Assist is only an aid and may
detect vehicles/obstacles incorrectly or not
at all.
The system may be impaired or may not func-
tion if:
R there is poor visibility, e.g. due to snow,
rain, fog or spray.
R the rear and/or front sensors are dirty.
Active Blind Spot Assist may not detect nar-
row vehicles, such as motorcycles or bicycles,
or only detect them too late. It cannot detect
vehicles which are overtaken at asmall dis-
tancea nd then enter the blind spot area.
Active Blind Spot Assist cannot detect road
and traffic conditions. It is not asubstitute for
attentive driving. You are responsible for the
vehicle's speed, braking in good time, and
steering correctly. Always adapt your driving
style to suit the prevailing road and weather
conditions. Always pay attention to traffic
conditions and your surroundings. Otherwise,
you may fail to recognise dangers in time,
cause an accident and injure yourself and oth-
ers.
The radar sensor system is automatically
deactivated near radio telescope facilities
(Y page 345).
For Active Blind Spot Assist to assist you
when driving, the radar sensor system must
be activated (Y page 229) and operational. Driving systems
199Driving and parking Z

Monitoring range
Active Blind Spot Assist monitors the area up
to three metres behind yourv
ehicle and
directly nexttoy our vehicle, as shown in the
diagram. For this purpose, Active Blind Spot
Assist uses radar sensors in the rear bumper. Example: Coupé
G
WARNING
Active Blind Spot Assist monitors certain
areas in the immediate vicinit yofyour vehicle.
Vehicles that approach and drive past at high
speeds are not detected. No visual nor audi-
ble warnings are emitted and the system does
not brake the vehicle to correc tyour course.
If the lanes are very wide, it may not be pos-
sible to monitor the complete width of the
neighbouring lane. For this reason, vehicles in
the next lane may not be detected, especially
if they are driving in astaggered formation.
This may be the case if vehicles are driving at
the edge of their lane that is furthest away
from your vehicle.
Always pay attention to traffic conditions and
your surroundings. Otherwise, you may fail to
recognise dangers in time, cause an accident
and injure yourself and others.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not driving in the middle of their lane. This may
be the case if the vehicles are driving on the
inner side of their lane.
Due to the nature of the system:
R
warnings may be issued in error when driv-
ing close to crash barriers or similar solid
lane borders.
R warnings may be interrupted when driving
alongside particularly long vehicles, for
example lorries, for aprolonged time.
Two Active Blind Spot Assist radar sensors
are integrated into the front and rear bumpers
respectively. An additional radar sensor is
located behind the cover in the radiator grille.
Make sure that the bumpers are free of dirt,
ice or slush around the sensors. The rear sen-
sors must not be covered, for example by
cycle racks or overhanging loads. Following a
severe impact or in the event of damage to
the bumpers, have the function of the radar
sensors checked at aqualified specialist
workshop, e.g. aMercedes-Benz Service
Centre. Active Blind Spot Assist may other-
wise fail to work correctly.
Indicator and warning display :
Yellow indicator lamp/red warning lamp
When Active Blind Spot Assist is activated,
indicator lamp :in the exterior mirrors lights
up in yellow at speeds of up to 30 km/h. At
speeds above 30 km/h, the indicator lamp
goes out and Active Blind Spot Assist is
operational.
If av ehicle is detected within the monitoring
range of Blind Spot Assist at speeds above 200
Driving systemsDriving and parking

R
ad riving safety system intervenes, suc has
ESP ®
or PRE-SAFE ®
Brake.
R ESP ®
is deactivated.
R al oss of tyr epressure or adefective tyr eis
detected.
Activating Activ eBlind Spot Assist
X Mak esure that th eradar sensor system
(Y page 229) and Activ eBlindS potA ssist
(Y page 224) are activated in th eon-bo ard
computer.
X Turn th ekeyto position 2in th eignition
lock.
Warning lamps :light up red in th eexte-
rior mirror sfor approximately 1. 5seconds
and then tur nyellow.
Trailer towing
If you attac hatrailer, make sure you have
correctly established the electrical connec-
tion .This can be accomplished by checking
the trailer lighting. Active Blind Spot Assist is
then deactivated. The indicator lamp in the
exterior mirrors lights up yellow, and the
Active Blind Spot Assist currently unavailable See Owner's Manual mes-
sage appears in the multifunction display.
Active Lane Keeping Assist Important safety notes
Active Lane Keeping Assist monitors the area
in front of your vehicle by means of
acamera
at the top of the windscreen. Active Lane
Keeping Assist detectsl ane markings on the
road and warns you before you leave your
lane unintentionally. If you do not react to the
warning, alane-correcting application of the
brakes can bring the vehicle back into the
original lane. :
Active Lane Keeping Assist camera
If you have selected the Display unit Speed-/odometer: (Y
page 225) function in
the on-board computer and select kmkm as
the unit of measurement, Active Lane Keep-
ing Assist is active from speeds of 60 km/h.
If the miles displayu
nit is selected, the assis-
tance range begins at 40 mph. G
WARNING
Active Lane Keeping Assist does not keep
your vehicle in its lane. It is only an aid and
may detect the lane markings on the road
incorrectly or not at all.
The system may be impaired or may not func-
tion if:
R several or no lane markings for asingle lane
are present.
R there is poor visibility, e.g. due to insuffi-
cient illumination of the road, or due to
snow, rain, fog or spray.
R there is glare, e.g. from oncomingt raffic,
the sun, or reflection from other vehicles.
R the windscreen is dirty, misted up or cov-
ered, for instancebyas ticker, in the vicinity
of the camera.
R the lane markings are worn away,d ark or
covered up, e.g. by dirt or snow.
R the distance to the vehicle in front is too
small and the lane markings thus cannot be
detected.
R the lane markings on the road are unclear,
e.g. near roadworks. 202
Driving systemsDriving and parking

X
Press the :or9 button to select the
Acoustic Lock function.
If the Acoustic Lock function is activated,
the & symbol in the multifunction dis-
play lights up red.
X Press the abutton to save the setting.
Activating/deactivating the radar sensor
system
i You must deactivate the radar sensor sys-
tem in certain countries and near radio
telescope facilities. For further informa-
tion, see (Y page 345).
Vehicles with anavigation system: the radar
sensor system is deactivated automatically if
you are close to radio telescope facilities.
The following systems are switched off when
the radar sensor system is deactivated:
R DISTRONIC PLUS (Y page 171)
R BAS PLUS (Y page 62)
R PRE-SAFE ®
Brake (Y page 66)
R Blind Spot Assist (Y page 196)
R Active Blind Spot Assist (Y page 199)
X Press the =or; button on the steer-
ing wheel to select the Settings menu.
X Press the :or9 button to select the
Vehicle submenu.
X Press the abutton to confirm.
X Press the 9or: button to select
Radar sensor (See Owner's Man.): .
You will see the selected setting: on or
off .
X Press the abutton to save the setting.
Heating menu Auxiliary heating departuret
ime
This function is only availabl eonvehicles with
auxiliary heating (Y page 137).
In the Heating submenu, you can select a
stored departure time or change adeparture
time. The auxiliary heating timer function calcu-
lates the switch-on time accordin
gtothe out-
side temperature so that the vehicle is pre-
heated by the departure time. When the
departure time is reached, the auxiliary heat-
ing continues to heat for afurther five
minutes and then switches off. The auxiliary
heating adopts the THERMATIC or
THERMOTRONIC temperature setting.
You can switch off the auxiliary heating by
using the remot econtrol or the auxiliary heat-
ing button on the centre console. G
WARNING
Exhaust fumes are produced when the auxili-
ary heating is in operation. Inhaling these
exhaust fumes can be poisonous. You should
therefore switch off the auxiliary heating in
confined spaces without an extraction sys-
tem, e.g. agarage. G
WARNING
When operating the auxiliary heating parts of
the vehicle can get very hot. Make sure that
the exhaust system does not under any cir-
cumstances come into contact with easily
ignitable material such as dry grass or fuels.
The material could otherwise ignite and set
the vehicle alight. Choose your parking spot
accordingly.
Operating the auxiliary heating is thus pro-
hibited at filling station sorwhen your vehicle
is being refuelled. You must therefore switch
off the auxiliary heating at filling stations.
! Operating the auxiliary heating/ventila-
tion draws on the vehicle battery. After you
have heated or ventilated the vehicle a
maximum of two times, drive for alonger
distance.
i Switc hthe auxiliary heating on regularly
once amonthfor about 10 minutes. Menus and submenus
229On-board computer and displays Z